CD-RW/DVD-ROM drive and device permission

Paul Howarth paul at city-fan.org
Tue Mar 15 13:10:56 UTC 2005


Francois Ouellette wrote:
>>From: Paul Howarth <paul at city-fan.org>
>>Subject: Re: CD-RW/DVD-ROM drive and device permission
>>
>>>Whatever I put in /etc/fstab it always comes back as:
>>>
>>>/dev/hdc /media/cdrecorder auto pamconsole,ro,exec,noauto,managed 0 0
>>>
>>>and /dev/hdc is owned by root with a protection mask: brw-rw----
>>
>>That entry looks OK as long as you're not using SELinux.
>>
>>I think that all that needs to be done is to get udev to recognise your
>>drive as a cdwriter and set up the appropriate link. Everything else
>>should fix itself automagically after that.
>>
>>Try creating a file /etc/udev/rules.d/10-custom.rules containing the
>>following line:
>>
>>BUS="ide", KERNEL="hdc", NAME="%k", SYMLINK="cdrom cdwriter dvd"
>>
>>I assume you have only one CD and/or DVD drive?
>>
>>Then see what you get after a reboot.
>>
>>Paul.
> 
> 
> Hi again
> 
> No change...
> Even without the rules entry the drive seems to works fine, there are
> entries in /media, etc
> What about the permissions.d in udev? The list includes a line that starts
> with "cdroms/*", this might be the correct place to set the permission?
> 
> What I have done as a workaround is create a little script in rc5.d to set
> the permission to /dev/hdc directly.

Are you getting symlinks in /dev though?

$ ls -l /dev | grep hdc

Paul.




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